Air compressing and cooling apparatus



No. 626,883. Patented lune I3, 1899. n. BERG.

AIR COMPRESSING AND COOLING APPARATUS.

' (Application med Mar. 24, 1898.)

3 SheetsS heet I.

(No Model.)

/A VEN 70/? pi/4,17% 25% I WITNESSES No. 626,883. Patented lune l3,I899.

n. BERG.

AIR COMPBESSING AND COOLING APPARATUS.

(Application filed 1m. 24, 1898.3 (No Model.) I a Sheets-Sheet 2.

WITNESS 1 I} f v No. 626,883. 7 v Patented lune l3, I899.

= n. BERG.

AIR COMPRESSI NGAND COOLING APPARATUS.

(Application filed Mar. 24,1395. (No Model.) 3 Sheets-Shoat 3.

' WITNESSES //v VENTOH,

ing apparatus.

UNITED STATES PATENT FICE.

RUDOLF BERG, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-HALFTO'FERDINAND VVENIG, OF SAME PLACE.

'AIR COMPRESSING AND COOLING APPARATUS.

SPECIFICATION forming part of Letters Application filed March 24, 1898}To all whom it may concern;

' Be it known that I, RUDOLF BERG, a citizen of the Empire of Germany,residing at Pittsburg, in the county of Allegheny and State ofPennsylvania, have invented new and useful Air Compressing and CoolingApparatus, of

.which the following is a'specification.

' Myinvent-ion relates to certain new and use-' fnl improvements in aircompressing and cool- The object of my invention isto constructanapparatus of this class which will absorbthe heat of the air while thesame is being compressed.

My invention particularly relates to an air' compressing and coolingapparatus in which the heat of the air is rendered sensible at the stageof its compression and is absorbed by means of a seriesof disks orheat-absorbers suitably arranged therein, thereby cooling .the air.

. My invention further relates in providing an air compressing andcooling apparatus of this class with means whereby a series of disks orheat-absorbers are cooled by a continuous flow of water.

My invention further relates'in providing an apparatus of this classwitha' compression-chamber having arranged therein apiston vat its lowerend to agitate and force the water around and between the series ofdisks or heat-collectors,' whicli are arranged in the enlarged upperportion thereof.

To make the object of myinvention clear, I will state that when the airor gas is compressed the heat contained therein is rendered sensible;or, in other words, the temperature increases and so does the caloricintensity in the compression chamber. .To overcome this increasedtemperature or to absorb the heat or to cool the air while in the act ofcompression, I" provide the compression-chamber with'a series of disksor heatabsorbers',whichare suitably arranged therein for the purpose-ofcollecting or absorbing the heat rendered sensibleduring the stage ofcompression. These disks or heat-absorbers also divide the air intosmall parts, so the same will be thoroughly cooled while'passing betweenthem Owing to'the continual flow Patent No. 626,883, dated June 13,1899.

Serial No. 674,992. (No model.)

of water over the disks or heat-absorbers the same are always keptcool,and the absorbing of heat from the compressed air tained thereby. v

. My invention further relates in constructis readily obing an apparatusof this character which will compress the air, cool the same whilecompressing, and also expand the same simultaneously. Y

Briefly described,my invent-ion consistsof a compression chamber orcylinder, a piston operating therein, a seriesof. disks orheat-absorbers arranged in the compression chamber or cylinder, anexpansion-chamber suitablyconnected thereto, and suitable operatingmeans therefor.

My invention finally consists in the novel combination and arrangementof parts hereinafter more fully and specifically described, andparticularly pointed out in the claim hereunto appended. v v

In describing the invention in detail reference is had to theaccompanying drawings, forming'a part of this specification, whereinlike letters of reference indicate corresponding parts throughout theseveral views thereof, and in which- 1 Figure 1 is a verticalsectional'view of my J improved air compressing and cooling-apparatus,an expansion machine or chamber connected thereto. Fig. 2 is alongitudinal section'al view of a modified form of compressing andcooling apparatus. Fig. 3 is a vertical sectional view of a modifiedform of an air compressing and cooling apparatus with a single-actingcompression chamber or cylinder. Fig. 4 is a cross-sectional view of amodified form of an air-compressing and coolingapparatus. Fig. 5 isacross-sectional View of a modified form of an air compressing andcooling apparatus with expansionchamber connected thereto. I 1

- Referring to the drawings by referenceletters, A indicates the casingof the air compressing and cooling apparatus, andBthe casing of theexpansion-chambers, the same being suitably connected by the air-outletpipe I). Arranged in the lower portion of the casing A arecompression-chambers a 'and a within which is placed the water, andvsecured to the sides of the casing A in any suitable manner; but I showin Fig. 2 the sides thereof apertured to receive the rods orscrewthreaded collars surrounding this apertured portion.

For forcing the water upon the disks or heat-absorbers'A after it entersthe 'chambers a and a I provide the piston P, having a piston-rod'P, thepiston operating in the lower portion of the chambers a and a as shownin Fig. 1.

A and A are suction-valves used for the admission of air to the chambersa and a which is forced, in connection with the water,

by means of the. piston P, up and around the disks A and thence throughthe outlet-valves A and Ainto a discharge-chamber a". From there it isconducted by means of an outletpipe D to the expansion-chamber.

61. indicates an air-inlet pipe for the admission of air to thesuction-chamber a From there it is taken by means of the suctionvalvesA} and A as heretofore stated, into the chambers a and at a, indicatesthe water-inlet pipe, and d the outlet-pipe which is connected to theregulating-valve C. This regulating-valve consists of awater-chainber 0,formed by the casing c; the supporting-gu'ideways a which are formedintegral withone side of the easing; the valve formed in the lower partof the support or guide 0 the float-valve 0 operating in the guide orsupport 0 ,the float 0 carried by the valve 0 the discharge-opening 0which admits the water into thedischarge-chamber c and the outlet-pipe 0It is readily apparent that by the use of this regulating-valve O acontinuous flow of water from the discharge -chamber a is obtained. Theoperation of this valve can be readily understood.

The suction-valves are operated by the levers F and F, which areconnected by the pit-man -rod E,carrying the eccentric E,whieh isoperated by the shaft II and which is suitably secured thereto. 4

K indicates a crank, and J a crank-pin. It will' be readily observedthat as the ec- F, which is connected thereto and which is v secured tothe shaft carrying the lever F, the

served that owing to the connection of the crank K by the crank-pin J tothe piston-rod the same are operated simultaneously.

The expansion machine or chambers B consist of a casing, as shown,having the aiminlets b and b andout-lets b and 6 having suitable valvesmounted therein, as shown; These valves are of the Corliss type, and,

owing to their construction and the pressure of the air in the inlet andoutlet passages, the regulation of the air passing therethrough isreadily obtained.

Figs. 2 and 3 show a modified form of my improved air compressing andcooling appa' ratus with a single com pression-chamber andheat-collecting device, the samereference-letters being applied to theseveral parts thereof.

Fig. 4: is a modified form of difierential aircompressor, samereference-letters being applied to the several parts thereof.

Fig. 5 shows a modified form of air compressing and cooling apparatuswith a single compressiomchamber and a modified form ofexpansion-chamber with suitable valves and operating mechanism Btherefor. operating the mechanism in connection with this modified formof air compressing and cooling apparatus consists of a supply-valve Band exhaust-'valve'B which are operated by the leve rsB and B, securedto the shaft 13. These levers are operated by the con- The valvenecting-rod, which is secured to the eccentric,

as heretofore stated. It will be readily observed that owing to thelever B having a pair of operating-arms and .whichoperates upon thesprings B and B the valves areoperated alternately.

,1) indicates the air-inlet; b the air-receiving chamber; 17 theexpansion -chamber;' bf, the exhaust-chamber,- and b the outlettherefor.

G indicates a steam-cylinder, G the inlet forthe steam, and g theoutlet. P is a piston operating in the cylinder, and G the pis ton-rod.These parts are of any ordinary construction. 2

The operation of my improved air compressin g and coolingapparatus is asfollows: When the shaft is operated by means of the pulley G, carryingthe belt G, which is connected to the shaft H, the water T in thechambers 'a and a is, agitated and forced in the enlarged portions a anda thereby cooling the disks or heat-absorbers A contained therein, andinturn the air is admitted into these chambers, where it is compressed,and during this process of compression the heat contained thereinisabsorbed, by the disks or heat-absorbers a From there it is conductedinto the expansion-chamber by means of s It will it enters thedischarge-chamber will pass into the discharge-pipe (Z, and thenceoutwardly through the regulating-valves C therefor.

It will be noted that various changesmay be made in the details ofconstruction without departing from the general spirit of my invention.

' Having thus fullydescribed my invention, what I claim as new, anddesire to secure by Letters Patent, is- I 1. In an apparatus of theclass described, the combination of a compression-chamberv and a pistonoperating therein; rods suitably mounted in the walls of said'compressionchambcr and a series of heat-absorbing disks mounted upon andsuitably spaced apart on said rods; an air-chamber and suction-valvesoperating therein; a discharge-chamber and valves connecting saiddischarge-chamber with the compression-chamber; an expansion chamber anda pipe connecting said expansion-chamber with the discharge-chamber; apiston operating in said expansiomchamber; means for operatingthe'pistons and connections between the operating means of the pistonsand the suction-valves of the airchamber whereby said valves areoperated simultaneously with theoperating of the pistons, substantiallyas described.

' 2. In an air compressing and cooling apparatus,the combination of acom pression-chaim her, an expansion-chamber and a dischargechambercommunicating with said expansionchamber, a series of disks orheat-absorbers mounted within the compression-chamber and suitablyspaced apart, said expansion-chamber having suitable inlet and outletpassages, valves arranged in said passages; an airchamber, a pair ofsuction-valves operating therein, and means for alternately operatingsaid valves, substantially as described.

3. In an air compressing and cooling apparatus,the combination of acompression-chamber, a series of disks or heat-absorbers mounted in saidcompression-chamber and adapted v to cool the air during compression, apiston operating in said chamber, an air-chamber, suction-valvescontrolling the inlet and outlet passages of said air-chamber, a pipeconnecting said dischargechamber and the expansion-chamben'a pistonoperating in said expansion-chamber, and means whereby the pistonin thecom pression-chamber, thepiston in the expansion-chamber and thesuctionvalves controlling the inlet and outlet passages of theair-chamber are operated simultaneously, substantially as described.

- at. In an air compressing and cooling apparatus, the combination of acompression-cham her and a piston operating therein; a series ofheat-absorbers mounted in said compress 6o sion-chamber and adapted tocool the air during its compression; an expansion-chamber and a pistonoperating therein; a pipe connectingsaid expansion and compressionchambers, a drive-shaft, connections between the piston of theexpansion-chamber and the piston of the compression-chamber; anairchamber and a pair of suction-valves control ling the inlet andoutlet passages of said chamber, and a rod eccentricall-y connected atits one end to'the drive-shaft and at its other end connected by leversto the suctionvalves whereby the same are alternately 013- erated and inconjunction with the operating of the pistons in the compression andexpansion chambers, substantially as described.

5. In a device for compressing air and cooling the same duringcompression, the combination of -a compression-chamber and a."pistonoperatingltherein; an expansion-chamher apd a'piston operating therein;a series of heat-absorbing-disks mounted Within the compression -chamberand suitably spaced apart; a discharge-chamber and a pair ofsuction-valves connecting said dischargechamber with thecompression-chamber; a regulating-valve suitably supported andcommunicating with the discharge-chamber, a driveshaft, and meansoperated by said drive-shaft for simultaneously operating the pistonsand thesuction-valves, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

RUDOLF BERG.

W'itnesses:

J AS. OCoNNELL, FERDINAND WENIG.

